visibility.public_unused: Public declaration no other domain uses

Public declaration no other domain uses.

Area 1, Project layout and modules; not declinable; the next step is usually the agent's.

public offers a declaration to the rest of the project, so it marks only what something outside the domain uses: another domain's code or tests, a root tests/ scenario, or the signature of a public declaration one of them uses. The domain's own tests don't count, and a package's public members are its interface to other projects, so they are exempt (area 11):

example

test "two todos are open" {    assert count_todos() == 2}

example

use shared/types { TodoCount }public action count_todos() -> TodoCount {    return 2}

jadpo checkcheck failed: 1 error, 4 files

error count_todos is public, but nothing outside planning uses it

--> domains/planning/actions/count_todos.jadpo:3:1

  |3 | public action count_todos() -> TodoCount {  | ^^^^^^ offered to no one

reason: public offers a declaration to other domains, and no other domain's code or tests, no root tests/ scenario and no public declaration they use names count_todos; planning's own tests don't count.
next: Remove public (agent)
rule: visibility.public_unused
help: https://jadpo.dev/docs/errors/visibility.public_unused